The best nett score (from any grade) from each Saturday Monthly Medal wins the mug for the month. 

MONTHLY MUG RULES

1. You may ask any member you know to fill your mug. (It is not mandatory for them to do so)
2. You can only ask each member only once that month
3. If you ask a member twice, you must buy that member a beer
4. The Monthly Mug is only available for use on Saturdays